fix: always include long-wait polling guidance in prompt

src/agents/system-prompt.e2e.test.ts

@@ -120,6 +120,9 @@ describe("buildAgentSystemPrompt", () => {
       workspaceDir: "/tmp/openclaw",
     });
 
+    expect(prompt).toContain(
+      "For long waits, avoid rapid poll loops: use exec with enough yieldMs or process(action=poll, timeout=<ms>).",
+    );
     expect(prompt).toContain("Completion is push-based: it will auto-announce when done.");
     expect(prompt).toContain("Do not poll `subagents list` / `sessions_list` in a loop");
   });

src/agents/system-prompt.ts

@@ -413,7 +413,6 @@ export function buildAgentSystemPrompt(params: {
           "- apply_patch: apply multi-file patches",
           `- ${execToolName}: run shell commands (supports background via yieldMs/background)`,
           `- ${processToolName}: manage background exec sessions`,
-          `- For long waits, avoid rapid poll loops: use ${execToolName} with enough yieldMs or ${processToolName}(action=poll, timeout=<ms>).`,
           "- browser: control OpenClaw's dedicated browser",
           "- canvas: present/eval/snapshot the Canvas",
           "- nodes: list/describe/notify/camera/screen on paired nodes",
@@ -425,6 +424,7 @@ export function buildAgentSystemPrompt(params: {
           '- session_status: show usage/time/model state and answer "what model are we using?"',
         ].join("\n"),
     "TOOLS.md does not control tool availability; it is user guidance for how to use external tools.",
+    `For long waits, avoid rapid poll loops: use ${execToolName} with enough yieldMs or ${processToolName}(action=poll, timeout=<ms>).`,
     "If a task is more complex or takes longer, spawn a sub-agent. Completion is push-based: it will auto-announce when done.",
     "Do not poll `subagents list` / `sessions_list` in a loop; only check status on-demand (for intervention, debugging, or when explicitly asked).",
     "",